The dimensional formula of wave number is

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The dimensional formula of wave number is

A

${M^0}{L^0}{T^{ - 1}}$

B

${M^0}{L^{ - 1}}{T^0}$

C

${M^{ - 1}}{L^{ - 1}}{T^0}$

D

${M^0}{L^0}{T^0}$
The dimensional formula of wave number is
Wave number = $\frac{1}{\lambda }$ 
$⇒$  dimension is $[{M^0}{L^{ - 1}}{T^0}]$